Shoring and jacking rig

ABSTRACT

A shoring and jacking rig is provided in which a pair of compression members pivoted at one end to a bracket or brackets for engaging a shored member are pivoted at their opposite end to the upper side of a pair of beams. These beams are mounted on their underside transversely to and for sliding movement on rails parallel to and spaced on opposite sides of the vertical plane of the compression members. Adjustable tension members are connected between the beams on opposite sides of the vertical plane of the compression members so that, by adjustment of the length of the tension members, the beams move toward or away from each other thereby varying the height of the upper ends of the compression members.

United States Patent 11 1 [111 3,923,286 Raugh Dec. 2, 1975 SHORING ANDJACKING RIG Primary ExaminerAl Lawrence Smith [75] Inventor: Donald D.Raugh, Grosse lle, Mich. Assistant Examiner-Robert Watson Attorney,Agent, or Ftrm-Shanley, ONell and Baker [73] Assignee: NationalSteelCorporation,

Pittsburgh, Pa. [57] ABSTRACT [22] Filed: Nov. 19, 1974 A shoring andjacking rig is provided in which a pair of compression members pivotedat one end to a [21] Appl' 525320 bracket or brackets for engaging ashored member are pivoted at their opposite end to the upper side of a[52] US. Cl. 254/84; 248/354 S; 254/126; p of m These beams r mounted nh ir.

254/133 A derside transversely to and for sliding movement on [51] Int.Cl. B66F 3/08 rails parallel to n spaced on pp i Sides of the [58] Fieldof Search 254/126, 133 A, 122, 100, vertical plane of the compressionmembers. Adjust- 254/9 R, 84; 248/354 5, 405 able tension members areconnected between the 1 beams on opposite sides of the vertical plane ofthe [56] References Cited compression members so that, by adjustment ofthe UNlTED STATES PATENTS length of the tension members, the beams rnove2.624.535 1/1953 Bollhoefer 254/122 Wa or away from each other therebyvarying the 3,160,228 12/1964 Steed 254/122 helght Ofthe upper ends ofthe compress'on members' 12 Claims, 2 Drawing Figures SHORING ANDJACKING RIG BACKGROUND OF THE INVENTION This invention is related toshoring and jacking devices. In one of its aspects, this invention isrelated to high capacity structural shoring and jacking devices. In yetanother of its aspects, this invention is related to jacking and shoringrigs adaptable for easy assembly and disassembly in a wide range offield conditions.

Although a variety of devices are available which are suitablefor'structural shoring and jacking, a rig made up of conveniently sizedcomponents that can be easily assembled and disassembled at the worksite and which is capable of high capacity work would be economicallyadvantageous. Such a device hitherto has not been available.

I have discovered that using readily available components, a jacking rigcan be assembled that is sufficiently versatile to accommodate a broadrange of field conditions, including high capacity support work and yetis of economical construction.

It is therefore an object of this invention to provide a jacking andshoring rig for high capacity support work.

It is another object of this invention to provide a high capacityjacking and shoring rig that is readily assembled and disassembled atthe job site.

Other aspects, objects and the several advantages of this invention willbe readily apparent to those skilled in the art from a reading of thisdisclosure and the appended claims.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a preferredembodiment of the invention and FIG. 2 is a side elevational view of ayoke which can be substituted in the structure of FIG. 1.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT Referring now to thedrawing, applicants shoring and jacking rig is illustrated. Thisstructure includes a pair of compression members, indicated generally at3, of equal length pivoted at one end 5 to brackets 7 for engaging ashored member 9 and pivoted at the other end 11 to a pair of beams 13.The compression members 3 are mounted on the beams 13 in a relationshipsuch that the pivotal action of the compression members 3 from the pivotpoints 11 at the beams describes a plane perpendicular to each of thebeams 13. The beams 13 are mounted for sliding movement on spaced rails15 that are parallel to and located on opposite sides of the verticalplane of the compression members 3. Tension rods 17 adjustable in lengthby turnbuckles 16 are connected between the beams 13 on opposite sidesof the vertical plane of the compression members 3. Adjustment of thelength of the tension members 17 by turnbuckles 16 causes the beams 13to move toward each other or allows them to be moved away from eachother thereby varying the height of the upper ends 5 of the compressionmembers 3. By setting the beams 13 sufficiently close to each other, thebrackets or column engaging means 7 pivoted to the ends of thecompression members 3 can be brought to bear on opposite sides of thecolumn 9 and, upon fixing the brackets 7 to the column 9 by bolting orwelding (not shown), vertical shoring or adjustment of column 9 isachieved.

Anchor brackets 21 receive the ends of tension rods 17, the rods beingthreaded to receive nuts 18, which can be used to supplement turnbuckles16. The anchor brackets are at equal distances from the vertical planeof the compression members 30 so that maximum utilization can be made ofthe combination of mechanical advantage and access for ease of operationand safety. There is also provision for the use of an additional pair oftension members 19. This second pair of tension members 19 are connectedto beams 13 at points on the webs close to the lower flange so as tocounteract any torque action on the beams by tension members 17 whichmight tend to cause them to rotate or roll in their movement along rails15.

The compression members 3 are preferably of equal length so that equaldirectional force can be brought to bear on opposite sides of theconstruction member 9 being supported. The compression members 3 can bemade out of a variety of materials and in a variety of shapes dependingon the compression force to which they will be subjected. Compressionmembers 3 are shown as heavy cylindrical piping, for example 6 inchdiameter steel pipe, but obviously other cross sectional members, suchas l-I-beams, would perform satisfactorily. The versatility of thejacking device 1 can be increased by constructing the compressionmembers 3 in sections 27 so that sections can be combined to obtain theoverall length desired. This is easily done with cylindrical piping byusing sleeves 29 that are held in place by bolts (not shown) to hold thepipe sections together.

At the upper end of each compression member 3 is a connection element 5and at the lower end a connection element 11 adapted for pivotalconnection by provision of pin holes. The structural member engagingmeans 7 pivotally connected by pin 6 to connection element 5 of eachcompression member 3 can be of any of a variety of shapes to accommodatethe construction member 9 that it engages. For example, the engagingsurfaces of the cooperating engaging means 7 can be flat to accommodateI-shape or I-I-shapes or they can be rounded to accommodate cylindricalconstruction members. The engaging means 7 can be attached to theconstruction member which it supports by being welded thereto or holescan be provided both in the engaging means and in the suppported memberto accommodate connection by bolts.

At the lower end of each of the pair of beams 13 there is a pivotingbracket or pivotal bearing means 31 carried by an inverted channel orU-shape 35 which mates with the connection element 11 on that end of thecompression member 3 and a pin 33 forms a pivotal connection at thispoint. The pivotal connections at 33 are aligned with the longitudinalaxis of the beams 13 and the compression members 3 are thus pivotallyconnected so as to act in a plane perpendicular to each of the beams 13.The beams 13 are also supplied with pairs of anchor means 21 spaced oneither side of the verticalplane of the compression members so thattension rods 17 can be attached at equal distances on either side of thevertical plane of the compression members 3. Only one pair of anchormeans 21 on each side of pivoting bracket 31 is necessary to theoperation of the invention, but a second pair 23 for tension members 19located close to the lower flange of beams 13 could be advantageous asdiscussed above. Suitable tension rod attachment means can comprise,among others, the holes 23 drilled in the webs of the beams (as 3 forrods 19) or anchors 21 attached to the top of the beams (as for rod 17)having suitable notches or holes for inserting tension rods. Thepivoting bracket 31 and the attachment means 21, 23 for the tensionmembers can be attached directly to the beams 13 or, as shown andalready described, to separate inverted channel 35 carried by each beam13. The separate plate 35 can be bolted to the beams.

In order for the beams 13 to move toward each other as the tensionmembers 17 and 19 are shortened, each of the beams is also provided ateach end with a slideable rail engaging means 25 which may take the formof a U-shaped channel which is adapted to be bolted to the beam orwelded thereto to slideably ride on and embrace each rail on which therigging superstructure slides. Overlap of the depending flanges ofchannels 25 on both sides of the rail 15 assures that the riggingsuperstructure will not slip off the rail 15 during operation. Slideablerail engaging means 25 are fixed to the beams 13 in alignment with eachother so that the rails 15 on which the beams 13 are mounted will beparallel to the vertical plane of compression members To assure ease ofoperation, the slideable rail engaging means 25 can comprise a lowfriction plate in the area of contact, e.g., an oil impregnated porousmetal plate, and finished plates 26 on rails 15 can be used tofacilitate the sliding action. At ground level, the rails 15 can befixed to supporting timbers or other structure made stationary on theground. At high elevations, the rails 15 can be affixed to the structureon which they are being used or a separate tower for support can beconstructed.

The tension members 17, 19 can be steel rods of any elongated materialof strength suitable to withstand the tension applied in the operationof the rig. Metal rods with threaded ends can be used and shortenedusing nuts 37 on the ends of the rods positioned on the outside of theparallel beams 13. The rods 17, 19 can contain turnbuckles 39 so thateither the securing nuts 37 of the turnbuckles 39 or both can be usedfor adjustment of tension. In operation of the rig, tension may beapplied equally to pairs of tension rods 17, 19 spaced on either sideand equidistant from the plane of the compression members 3.

Sizing of the component parts and material of construction of theshoring and jacking rig of this invention to support loads of varyingsize is within the skill of the art. Although, particularly in handlingloads of five to hundreds of tons, metal components are primarilyenvisioned, it is within the scope of the invention to use any materialof sufficient strength safely to bear the load to which it is subjected.

Referring again to the drawing, the operation of the rig in shoring avertical column 9 supporting a 44 ton load can be advantageouslyexplained. The rigging device of this invention is shown engaging anIbeam 9 which is shown in partial cut-away so that the engagement of thedevice and the engaged construction member can be shown.

Parallel rails 15 have been fixed in position adjacent to the supportedmember 9. The shoring rig mounted on the rails 15 comprises a pair ofI-beams 13, 8 feet in length on each of which has been placed aninverted channel member 35 on which is welded at the midpoint of thebeam 13 a pivoting bracket 31 and on either side of the pivoting bracket31 are anchor brackets 21 with holes 1% feet from the beam 13 midpointto accommodate l-inch diameter tension rods 17. Each beam 13 also has ateach of its ends on the side opposite the pivoting brackets 31 aninverted channel member 25 welded to the beam 13 to form a rail engagingmeans by which the rig rides on the rails 15. Each beam 13 is alsopierced at a position three feet from its midpoint slightly above therail engaging means 25 to accommodate a second pair of tension rods 19.

Compression means 3, made up of 6-inch I.D. standard pipe sections 27joined by 7% inch I.D. pipe sleeves 29 so that the compression members 3are of equal 16% foot length, are pivotally connected to the beams 13 atpivot points 33. With the beams 13 set about 16 feet apart thecompression members 3 are pivoted in position in a plane that isperpendicular to each of the beams 13 so that the structural memberengaging means 7, made up of paired right and left hand 6 4X% inch angleirons, pivotally connected to the upper ends 5 of the compression means3 engage the central portion of the I-beam 9 which is being supported.The engaging means 7 are welded in position to the I-beam 9.

The shoring action is accomplished by shortening the tension rods 17 andif desired rods 19 also. The supported member 9 is raised by increasingthe tension on tension members l7, 19 or is lowered by decreasing thetension on tension members 17, 19.

A major desideratum in the development of the present invention was theprovision of a package of structural members which could be put togetherto assemble a shoring and jacking device when and where needed. For thisreason, the compression members 3 are made up of sections 27 that can beassembled into members of desired length for a given situation and thisalso applies to the tension members 17 and 19 which can incorporate aplurality of turnbuckles to accomplish the same purpose. U-shape orchannel members 35 carry the pivoting bracket 21 and a plurality ofanchor brackets for combination with any desired length beam 13, channelmember 35 being bolted in place or held in place by the weightofcompression members 3. Channel members 35 snuggle embrace the upperportions of beams 13 to give a stable structure while at the same timemaking it possible to slide channel member 35 along beam 13 to positionpivoting bracket 31 properly relative to a structural member to beshored up. It will be understood that where channel member 35 is boltedto beam 13, the necessary holes can be drilled in the top flange of beam13 for this purpose.

In FIG. 2 a modification is shown in which an integral bracket 7 takesthe place of the two separate brackets 7, 7 of FIG. 1 so that thestructure of FIG. 2 can be used to support a horizontal girder or beam9' rather than a column. In FIG. 2, compression members 3, 3' correspondto members 3, 3 in FIG. 1 and the omitted structure in FIG. 2 wouldcorrespond to the remaining structure in FIG. 1.

From the description above, in which is set forth a specific applicationof the device of this invention, it can be seen that a readily assembledand knocked down device of general applicability in the field of shoringand jacking, particularly in handling high capacity loads, is provided.

I claim:

1. A shoring and jacking rig comprising a. a plurality of spaced,parallel rail means,

b. a pair of spaced parallel beams with their length disposed at rightangles to the length of the rail means,

c. rail engaging means affixed to the beams for slideably connecting thebeams and the rail means for movement of the beams along the length ofthe rail means,

d. means associated with the rail engaging means pre venting relativemovement of the beams in a direction transverse to the length of therail means,

e. a slideable support member resting on each beam intermediate the endsof the beam, each slideable support member having depending flangessnugly embracing the upper portion of the associated beam,

f. pivotal bearing means mounted on each slideable support member, bothpivotal bearing means being located in a single plane parallel to therails and perpendicular to the beams,

g. a pair of elongated compression members, each elongated compressionmember having its lower end pivotally connected to a different one ofthe pivotal bearing means, the pivotal connection between the lower endof each elongated compression member and the pivotal bearing meansconstraining the elongated compression members to pivoted movement inthe single plane,

h. a pivot means at the upper end of each elongated compression member,

. structural member engaging means pivotally connected to the pivotmeans at the upper end of each elongated compression member,

j. tension rod anchor means carried by each beam on each side of thesingle plane,

k. tension rod means connecting anchor means carried by one beam on oneside of the single plane with anchor means carried by the other beam onthe same side of the single plane,

. tension rod means connecting anchor means carried by one beam on theother side of the single plane with anchor means carried by the otherbeam on the same side of the single plane, and

m. means associated with each tension rod means for decreasing thedistance between beams and thereby raising the elevation of thestructural member engaging means.

2. The structure of claim 1 in which means (i) comprise two elements onepivotally mounted on one elongated compression member and one pivotallymounted on the other elongated compression member with no directphysical connection between the two elements.

3. The structure of claim 2 in which the rail engaging means oflimitation (c) include low friction surfaces in engagement with the railmeans.

4. The structure of claim 1 in which the structural member engagingmeans of limitation (i) comprises an integral structural memberpresenting an upwardly facing supporting surface.

5. The structure of claim 4 in which the rail engaging means oflimitation (c) include low friction surfaces in engagement with the railmeans.

6. The structure of claim 4 in which tension rod anchor means oflimitation (j) are carried by each beam at points spaced below the topsurface of the beam.

7. The structure of claim 6 in which the tension rod anchor means oflimitation (j) are mounted on each slideable support member.

8. The structure of claim 1 in which the rail engaging means oflimitation (c) include low friction surfaces in engagement with the railmeans.

9. The structure of claim 8 in which tension rod anchor means oflimitation (j) are carried by each beam at points spaced below the topsurface of the beam.

10. The structure of claim 9 in which the tension rod anchor means oflimitation (j) are mounted on each slideable support member.

11. The structure of claim 3 in which tension rod anchor means oflimitation (j) are carried by each beam at points spaced below the topsurface of the beam.

12. The structure of claim 11 in which tension rod anchor means oflimitation (j) are mounted on each slideable support member. =l

1. A shoring and jacking rig comprising a. a plurality of spaced,parallel rail means, b. a pair of spaced parallel beams with theirlength disposed at right angles to the length of the rail means, c. railengaging means affixed to the beams for slideably connecting the beamsand the rail means for movement of the beams along the length of therail means, d. means associated with the rail engaging means preventingrelative movement of the beams in a direction transverse to the lengthof the rail means, e. a slideable support member resting on each beamintermediate the ends of the beam, each slideable support member havingdepending flanges snugly embracing the upper portion of the associatedbeam, f. pivotal bearing means mounted on each slideable support member,both pivotal bearing means being located in a single plane parallel tothe rails and perpendicular to the beams, g. a pair of elongatedcompression members, each elongated compression member having its lowerend pivotally connected to a different one of the pivotal bearing means,the pivotal connection between the lower end of each elongatedcompression member and the pivotal bearing means constraining theelongated compression members to pivoted movement in the single plane,h. a pivot means at the upper end of each elongated compression member,i. structural member engaging means pivotally connected to the pivotmeans at the upper end of each elongated compression member, j. tensionrod anchor means carried by each beam on each side of the single plane,k. tension rod means connecting anchor means carried by one beam on oneside of the single plane with anchor means carried by the other beam onthe same side of the single plane, l. tension rod means connectinganchor means carried by one beam on the other side of the single planewith anchor means carried by the other beam on the same side of thesingle plane, and m. means associated with each tension rod means fordecreasing the distance between beams and thereby raising the elevationof the structural member engaging means.
 2. The structure of claim 1 inwhich means (i) comprise two elements one pivotally mounted on oneelongated compression member and one pivotally mounted on the otherelongated compression member with no direct physical connection betweenthe two elements.
 3. The structure of claim 2 in which the rail engagingmeans of limitation (c) include low friction surfaces in engagement withthe rail means.
 4. The structure of claim 1 in which the structuralmember engaging means of limitation (i) comprises an integral structuralmember presenting an upwardly facing supporting surface.
 5. Thestructure of claim 4 in which the rail engaging means of limitation (c)include low friction surfaces in engagement with the rail means.
 6. Thestructure of claim 4 in which tension rod anchor means of limitation (j)are carried by each beam at points spaced below the top surface of thebeam.
 7. The structure of claim 6 in which the tension rod anchor meansof limitation (j) are mounted on each slideable support member.
 8. Thestructure of claim 1 in which the rail engaging means of limitation (c)include low friction surfaces in engagement with the rail means.
 9. Thestructure of claim 8 in which tension rod anchor means of limitation (j)are carried by each beam at points spaced below the top surface of thebeam.
 10. The structure of claim 9 in which the tension rod anchor meansof limitation (j) are mounted on each slideable support member.
 11. Thestructure of claim 3 in which tension rod anchor means of limitation (j)are carried by each beam at points spaced below the top surface of thebeam.
 12. The structure of claim 11 in which tension rod anchor means oflimitation (j) are mounted on each slideable support member.